I.MX27 Datasheet, PDF(31/148 Page) Freescale Semiconductor, Inc

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I.MX27 Datasheet, PDF (31/148 Pages) Freescale Semiconductor, Inc – Multimedia Applications Processor

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Signal Descriptions

Table 3. i.MX27/MX27L Signal Descriptions (continued)

Pad Name

Function/Notes

Note: KP_COL[7:6] and KP_ROW[7:6] are multiplexed with UART2 signals as show above, also see UARTs table.

PWM

PWMO

PWM Output. This signal is multiplexed with PC_SPKOUT of PCMCIA, as well as TOUT2 and

TOUT3 of the General Purpose Timer module; PE5.

CSPI (X3)

CSPI1_MOSI

Master Out/Slave In signal, PD31

CSPI1_MISO

Master In/Slave Out signal, PD30

CSPI1_SS[2:0]

Slave Select (Selectable polarity) signal, the CSPI1_SS2 is multiplexed with

USBH2_DATA5/RCV; and CSPI1_SS1 is multiplexed with EXT_DMAGRANT; PD26â28.

CSPI1_SCLK

Serial Clock signal, PD29

CSPI1_RDY

Serial Data Ready signal, shared with Ext_DMAReq_B signal; PD25

CSPI2_MOSI

Master Out/Slave In signal, multiplexed with USBH2_DATA1/TXDP; PD24

CSPI2_MISO

Master In/Slave Out signal, multiplexed with USBH2_DATA2/TXDm; PD23

CSPI2_SS[2:0]

Slave Select (Selectable polarity) signals, multiplexed with USBH2_DATA4/RXDM,

USBH2_DATA3/RXDP, USBH2_DATA6/SPEED; PD19âPD21

CSPI2_SCLK

Serial Clock signal, multiplexed with USBH2_DATA0/OEn; PD22

Note: CSPI3 CSPI3_MOSI, CSPI3_MISO, CSPI3_SS, andCSPI3_SCLK are multiplexed with SD1 signals.

I2C

I2C2_SCL

I2C2_SDA

I2C_CLK

I2C_DATA

I2C2 Clock, through GPIO, multiplexed with SLCDC_data8; PC6

I2C2 Data, through GPIO, multiplexed with SLCDC_data7; PC5

I2C1 Clock; PD18

I2C1 Data; PD17

CMOS Sensor Interface

CSI_HSYNC

CSI_VSYNC

CSI_D7

CSI_D6

CSI_D5

CSI_PIXCLK

CSI_MCLK

CSI_D4

CSI_D3

CSI_D2

Sensor port horizontal sync, multiplexed with UART5_RTSP; PB21

Sensor port vertical sync, multiplexed with UART5_CTS; PB20

Sensor port data, multiplexed with UART5_RXD; PB19

Sensor port data, multiplexed with UART5_TXD; PB18

Sensor port data; PB17

Sensor port data latch clock; PB16

Sensor port master clock, PB15

Sensor port data, PD14

Sensor port data, multiplexed with UART6_RTS; PB13

Sensor port data, multiplexed with UART6_CTS; PB12

i.MX27 and i.MX27L Data Sheet, Rev. 1.5

Freescale Semiconductor

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